Crushing-mill.



asuma-Sum' 1.

Patentedv sept 22, 190s.

w. M. MUELLBB. i c'usma um.; APPLIU'LTIOH FILED IAB. 13, 1901.

' TWIKNGIII Pfflll .,ll-ll'f.,l

i i i i lUNrrED STATES. PATENT OFFICE.

i `WALDEMAR M. MUELLER, OF LOS, ANGELES, CALIFORNIA.

f cRUsm'NmLr..

LER, a citizen. of theUnited S`tates, residing at Los Angeles,icounty ofLos Angeles, and

State of California, have invented new and useful Improvements inCrushing-Mills, of wlnch the followmgfisa specification.

This invention 'relates tocrushing mills,

` and the main objects of the invention are to provide a simple andstrong crushing mill of great durability 'which can be taken apa-rt andreadily transported and put together.

. tical section on line :r2-m1'2 Fig. 1.

Another. object is to provide a construction in which screws and boltsare dispensed withas much as possible.

`Other advantages of the invention reside in details of' construction,arrangement' and combination, as will appear in the followingdescription.

Referring to the drawings z-Figure 1`is a plan view of the machine. Fig.2. is a ver- Fig. 3 is a cross section on line ars-'z3 Fig. 1, Fig. 4 isa perspective view, showing in detail a stationary shoe support and itstrain of related regulating artsslightly separated in the order inwhic 1they are assembled, the lower portion of a rocking shoe and its armbeing also shown. A Fig. 5 is a` perspective of a uleruin link. Fig. 6is a perspective in detail, cfa journalbracket and adjacent parts.

1 designates a pair of beams each of Awhich is preferably constructeihofwood ywith an iron' or steel surface armor, by the use of whichrigidity and "strength are secured without undueweight. The beams] areconnected together near their ends by a pair Y of cross bars 2, eachcross bar'having a -the beams and Vis provided on each' side with'tongue 3 which'passes through aV slot in the armor of the beams 1, andis secured by a key 4 passing through the tongue and lying close againstthe armor, as clearly shown in Figs. I and 3.

. Journal brackets 5 are mounted above the beams 1 and aresecuredtheretoby long bolts 6, as shown in Fig. 3, which pass complet-@lv through thebeam 1., Mounted in each bracket 5"is a split bearing sleeve 7, tl 1etwo sections of which are arranged. on opposite sides of ai verticalline through the center of the journal', andmounted in the split sleeves7 is a shaf t S. The sleeves 7 are held in place by screws 9, which.sn'l'ord means for taking up .."ear. The shaft 8 carries a ilywheel l0.'

fulcrum bar I1 extends across between Specication of Letters.: retenir'.Y Agpiicaaon sied maren 1:3, 1907.- serm No. 362,237.

Patented Sept. 22, 19708.

Keyed to. the shaft S is a sleeve 13 which 60' provided' with a seriesof c ccentrics 14, the eecentries belng preferably formed integral mentfour eccentric-s are em loycd, each ecwiththe sleeve, and in the presentembodicent1i'c,as shown in Fig. 3, raving a central 6 5.

flange 15. Mounted on'each eccentric is'a split head-block 16, eachsection of which is provided with upper and lower lugs I7, and securedto each head-block by means of bolts 19, is a pair of' operating arms1S', the bolts 70- assing through the arms 1S and through the ugs 17,'thus Vholding the two sect-ions of the head-block 'together and holdingthe arms 18 in position thereon. Each operating arm 18 nearthe'alowerendfis'provided with a trans- 75 verse concave -groove 2Osimilar to the grooves 12 inl thc fulcrum bar 11. The lower end of eachoperating arm 1S has an operative connection with the fuler'um bar 11 bymeans of a solid fulcrum rocker or link 21 80 having rounded ends asshown iii-detail in Fig. 5, which link engages in the concave groove inarm 1S, and con l.ave groove 12 in fulcrum bar 11. Near the lower end ofeach operating arm 1S is a crushing shoe 22, 85

the upper portion of which has a sloping face 23, the crushing shoebeing detachably fastened to the operating armlSbymeans of awedge-shaped dove-tail 24 which engages in a correspondingly shapedsocket 25/011 the 90 operating arm 1Q. Each crushing shoe may thus bequickly detached and replaced by a new one when necessary.,A

Extending across between the o'eams 1 are two tables 26 \\'jhich, forstrength, are U- 95 shaped in cross section, as shown in Fig. 2, andhave end plates-2T through whichfastening bolts 28 pass to secure thetables to the beams l. Auxiliary tables 2!) are provided slightly backof each table 26, each table 29 100`v being T-shapcd in cross section,as shownVv m Fig. 2,. and being fastened by bolts 30 to the beams 1.Resting upon each table 26 are four shoe holders` 31.5

iown in detail in Fig. 4,

eachshoe holder being hollow but having a solidend 32whichis providedwith a dove-tail socket 24 similar to the dove-tail sockets on theopera-ting arms 1S, and a similar crushing `shoe 22'is carried b vcachshoe holder 31.

ivi-thin each shoe holder 31, abutting against *A the head 32, is asafety block 33 which 1sv hollow, as shown, and has four solid fac-es a,b,

y 6,11. Each facelaandcis punch-able lbeing rovided with aShallo\vpoeken'-r, while the aces b and (l are plain a though they mighty alsov be provided with' such pockets if deisired. 'A resistance pin35, having a head 36, is mounted back of each safet)v block 33,

` the end of the 1pin 35 resting in theadjacent holders pocket 34, amthe head 36 resting vuponthe table 29. The rear face of each 'head 36-is provided with an inclined groove 37, and the cross hars 2, beforedescribed','are provided with a series of Vc.'orrespmiding grooves 37,'

and engaging in the grooyes', between the heads'lti and the cross bars2, are wedges 3S each having a lug 3) througliwlnch passes an wedges 3Sprovide a strong and sim ,le means -of 'adjusting the position of theshoe holders l31A to give the necessary-s ace between the crushing shoes22, while tiescrews 40 prei vent the wedges 3S from workingdown andtaking of the. necessary two combined movements of rocking and mov-ingbodily by reason of the fulcrum links 21. Ore or rock to be crushed isfed to each set of crushing shoes, and as one set of crushing shoes is ocned up` ore falls Ybetween them, and as tiey close the ore is crushedby the opera.- tion of the adjacent crushing shoes. The crushing shoewhich is carried by the operatingarm 18 liasfa substantially verticalmovement and also a rocking movement, and. the combination of these two`move- Aments results in effectively crushingihe ore.

Asthe movable crushing shoe retracts from the stationary shoe itpartakes iii-st of a slight vertical raise and then of a downward Vmovement which facilitates the movement. of

' crushed orepast the shoes as well as facilitatiiig the crushing o)eration itself.

It will be noted tliat a large amount oi friction has been eliminated bythe method of'ia'u'ticulating the lower ends of the opel'- .ating arms18, and yet a very strong construction, is provided. The relativevmovement between thc rounded ends ofeach fulcruin block 21', with theircoaeting parts, is very slightfand there is thusilittle friction eventhough the fulcrum'link 'is under a heavy compression strain, whereas inother constructions 'of'..this type of mill in which the lower ends ofthe arms 1S slide along a support, there isaI great amount of frictionadjusting screw 40, the lower end of which' screw 1s swiveled' 1n thecross bar 2. The

punctured .face -c with the resistance pm 35,

developed.v Thus the present construction ena-bles the mill to beoperated with less"V power and with less wear ofthe parts.

lf inoperation anything should be fed to thev crushing shoes which the.latter were, unable to crush, the. resisting shoe holder 31 wouldsustain an extraordinary backward pressure, as the movable shoecan notyield,

and this strong back 4nessure on the shoe holds. would -result in orcingback the asso-V ciated safely block', causing the resistance pinB topuncture the wall a at the pocket 34, whereupon the shoe hold'er and satogether with thel crushing shoe would be moved back for quite adistance until the end ol the resistance pin 35 contacted with the wallc of the safety block, and this yielding movement would 'obviously inmany inety blockstances prevent great damage to the nia-- chine andmoreover would not necessitate the mill being stopped. as theinterfering noncrushable 4piece would fall through between the jaws u)on the lnrckward movement of .the shoe he der. lWhen the wall has been'thus p'unclui'edthe safety block is slipped out from the shoe holderand reversed so that its wall (l rests against head 32, and itsnonisplaced m conJunction has been puncturm in similar manner, thesafety block may be replaced by another one, or as is obvious't'he facesl) and d could serve in their turn, although with both walls aand cpunctured it would be preferable to substltutea new safety block as thepunetured walls a and c would probably not- Uive suiicient su Sportingstrength to the otlier walls. Obvious y the walls of the safety bloc-kare made sulliciently 4strong to stand the ordinary heavy crushingpressure, but are made with a limited margin of strength such that anextraordinary pressure will result in a p l not ure and thus relieve themill from strain.

or breakage.

What I claim is:-

1.111 a crushing mill, crushing shoes, means for producing a relativemovement between the shoes, means for resisting the retraction of a shoeincluding a hollow safety block having a plurality' ofpuncturable faces,and a resistance piu abutting againstV one of the puncturable faces. A

2. In a crusl ng null, a frame provided with a f ulcrum bar aud twotables upon each side thereof, a hollow shoe holder upon one of saidtables, one end of which is open and the other end is provided with acrushing shoe, a safety block in said holder, a pin adjustably mountedon the, other table at one end with its opposite end in eueageinent withsaid block, a eam shaft, a headilock thereon, two larms secured 'attheir upper ends to said block and having their lower ends; one uponeach 'side of said fulcrum bar, each arm being pro-vided with a crushingshoe opposite one After the wall c.

'ofeac 1 fille-rum cams, each head being split and having ofthe s hoeson said holders, and a link en gaginv with each bar andthe fulcrum bar.

3. nacrushinv ing shoe carried thereby, a inovablecrushng shoe, a hollowsafetyblockm saldshoeholder, 4 a resistance pm. abutting against saidsafetyblock, a head on the resistance pin, a stationary bar, and a wedgebet\\ 'een said bar and head for adjusting said resistance pin and shoeholder.

4. In a crushing mill, a. frame comprising apair of me tal armoredbeams, cross braces connecting said beams, each cross brace havingartonvue project-ing through the met-al armor, a 'ey -passing througheachtongue back of the armor, journal brackets bolted to said beams, ashaftmounted in the journal brackets, a cam keyed on said shaft, aplurality of heads mounted on the respective hws, a pair of operatingarms for each head, bolts passim f through the operating arms and lugshead thus securing the arms and head together on the associatedeccentric, the other endsof the arms'having concave grooves, a fulcrumbar having concave grooves 1n opposite faces,fu1crum blocks havnxgrounded ends interposed between the bar and the operating arms andV en-A.gaging in said concave grooves, crushi .shoes carried by the operatingarms, an 111-111, a shoe holder, a. crushstationary adjustable shoes forco perating with the first named shoes.

5. In a crushmg mill, a frame provided '1' with a fulcrum bar a-nd arecessed cross bar on each side thereof, supports between said bars andthe fulcrunrbar, oppositely located shoe holders on said supports, aremovable vsh'oe on the inner' end of each holder, a pinv for eachholder having arecessed head'to register with one of the recesses insaid bars, a wedge for each pair of registeringrecesses, means foradjusting said wedge, a shaft above the fulcruin bar provided with a'plurality of cams, one for each pair of o p0 sitely located removableshoes, a pair o deending arms for each cam havin their ower ends, oneupon each side of t e fulcrum bar, each arm beinu' provided with acrushing shoe, and a link tbetween each arm and the fulcrum bar.

In testimony whereof, I have hereunto set my hand at Los AngelesCalifornia this 23d day of January 1907.

In presence of GEORGE T. HACKLE'Y, FRANK L. A. GRAHAM.

WALDEMAR M.1\1UELLER.v Y, Y.

